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The Development of Testing-equipment in Graphite Contact Siemens Breaker’s Machine-characteristic

Author: ChouMing
Tutor: WuGuoZhong；CaoYuBang
School: Zhejiang University
Course: Electrical Engineering
Keywords: High-voltage switchgear Graphite contact Constant current source Linear optocoupler A / D converter
CLC: TM564
Type: Master's thesis
Year: 2009
Downloads: 14
Quote: 1
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Abstract


The high-voltage switching power system protective equipment, its operational status is directly related to transmission, distribution , electricity , and even entire power grid reliability and security . In recent years, Siemens 3AQ , of 3AT Series graphite contact high-voltage switch applications increasingly widespread use of traditional test equipment to test the kind of high-voltage switchgear , but not the correct open and close time parameters . This paper studies graphite contact special high-voltage switch interrupter structure, the analysis of the working principle of the traditional test equipment to find the root causes of the problem . This paper presents a constant current source , the sampling fracture voltage dynamic resistance test methods and new testing equipment developed specifically for this type of high-voltage switch . The instrument is designed with a high-performance AVR controller , CPLD , linear optocoupler , synchronize ADC and other advanced technologies ; also equipped with large-screen LCD, micro thermal printer , USB interface and other useful peripherals . In actual application , the test waveform and the data reaches the expected technical requirements to provide for the safe operation of such high voltage switch test security .

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CLC: > Industrial Technology > Electrotechnical > Electrical > Electrical switches,circuit breakers > Variety of switching
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